This card is based on the “magic wallet” which can be opened infinitely because of some clever straps. I used clear straps so the trick is more effective and harder to see here.

The envelope features cutout initials “DAR” and then reversed “RAD” and is closed with a D.O.B. seal.

The infinity card holds the insert which features a cascading overlay of cutout cardstock sending the birthday wishes. “Smedley” is a “term-of-endearment” from childhood.